Scheme 2.
Reagents: (a) SOCl2, MeOH; (b) 3-Phenylpropionic acid, EDC, NMM, HOBT; (c) 2N NaOH, MeOH; (d) EDC, DMF, (e) L-Phenylalaninol, EDC, NMM, HOBT; (f) Dess-Martin reagent
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